One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,5)(7,8)(9,10,13,12)(11,15,16,14)(17,18,23,28)(19,24,30,25)(20,31,21,26)(22,32,29,27)(2,5)(6,8)(9,11)(10,14)(12,15)(13,16)(17,19,23,30)(18,24,28,25)(20,29,21,22)(26,32,31,27)(10,12)(11,16)(17,20,23,21)(18,25,28,24)(19,29,30,22)(26,32,31,27)(1,3,4,7)(2,6,5,8)(9,12,13,10)(11,15,16,14)(17,21,23,20)(18,26,28,31)(19,29,30,22)(24,27,25,32)(11,16)(14,15)(19,30)(20,21)(24,25)(26,31) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.